fix: conflictError when multiple Zope instances start simultaneously …

[remdub]

…and commit OIDC settings

DEVOPS-339

Summary by CodeRabbit

Release Notes

• Bug Fixes

  • Resolved a ConflictError that occurred when multiple Zope instances started simultaneously while committing OIDC settings. The system now gracefully handles the conflict and preserves configuration integrity.

• Tests

  • Added test coverage for OIDC settings initialization and conflict scenario handling.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 0c2dbad4-8e69-4a00-a45f-7742e8094db0

📥 Commits

Reviewing files that changed from the base of the PR and between e1284be and 2e3be74.

📒 Files selected for processing (3)

• CHANGES.md
• src/pas/plugins/kimug/utils.py
• tests/utils/test_utils.py

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📝 Walkthrough

Walkthrough

This pull request fixes a ConflictError that occurs when multiple Zope instances simultaneously commit OIDC settings. The fix adds error handling in set_oidc_settings() to gracefully catch and abort conflicting transactions, with corresponding test coverage and changelog documentation.

Changes

Cohort / File(s)	Summary
Documentation CHANGES.md	Added changelog entry documenting DEVOPS-339 fix for ConflictError during concurrent OIDC settings commits.
Core Functionality src/pas/plugins/kimug/utils.py	Modified set_oidc_settings() to wrap transaction.commit() in try/except, catching ZODB.POSException.ConflictError, aborting the transaction, and logging a warning instead of propagating the exception.
Test Coverage tests/utils/test_utils.py	Added TestSetOidcSettings suite with tests for ConflictError handling (verifying graceful abort without exception propagation) and OIDC settings update from environment variables.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Poem

🐰 Two Zope hops tried to commit at once,
A conflict arose—what unlucky bunts!
But now our fix catches that messy blur,
Aborts with grace, no more ruffled fur. ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: fixing a ConflictError when multiple Zope instances start simultaneously and commit OIDC settings.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch DEVOPS-339

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